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Finding the Fourth Proportional to 20,804.64, 28,710.62 and 11,852.11

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Solution

The fourth proportional to 20,804.64, 28,710.62 and 11,852.11 is: 16,356.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.64 : 28,710.62 = 11,852.11 : x
  2. Step 2: Convert to fraction form
    20,804.64/28,710.62 = 11,852.11/x
  3. Step 3: Cross multiply
    20,804.64x = 28,710.62 × 11,852.11
  4. Step 4: Simplify right side
    20,804.64x = 340,281,426.41
  5. Step 5: Solve for x
    x = 340,281,426.41/20,804.64
  6. Step 6: Final answer
    x = 16,356.04

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.